#pageReadyBox{
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate3d(-50%, -50%, 0);
    -webkit-transform: translate3d(-50%, -50%, 0);
    z-index: 9999;
}
#pageReadyBox span{
    display: inline-block;
    width: 8px;
    height: 100%;
    border-radius: 4px;
    background: lightgreen;
    margin-left: 4px;
    margin-right: 4px;
    animation: load 1s ease infinite;
    -webkit-animation: load 1s ease infinite;
}
@keyframes load{
    0%,100%{
        height: 40px;
        background: lightgreen;
    }
    50%{
        height: 70px;
        margin-top: -15px;
        margin-bottom: -15px;
        background: lightblue;
    }
}
@-webkit-keyframes load{
    0%,100%{
        height: 40px;
        background: lightgreen;
    }
    50%{
        height: 70px;
        margin-top: -15px;
        margin-bottom: -15px;
        background: lightblue;
    }
}
#pageReadyBox span:nth-child(2){
    animation-delay: 0.2s;
    -webkit-animation-delay:0.2s;
}
#pageReadyBox span:nth-child(3){
    animation-delay: 0.4s;
    -webkit-animation-delay:0.4s;
}
#pageReadyBox span:nth-child(4){
    animation-delay: 0.6s;
    -webkit-animation-delay:0.6s;
}
#pageReadyBox span:nth-child(5){
    animation-delay: 0.8s;
    -webkit-animation-delay:0.8s;
}